Previously forecast offset `df_scenario` was computed only when number of scenarios was
greater than one. Long-term scenario data should use a special label in the `f` dimension
in all cases.

Re-implementing dynamic generation portfolios (see issue #119). Unit investment variables still have the 't' dimension, although it is kind of redundant. Units have technical lifetimes (given in ut set) but links are assumed to stay in the system forever after they have been built. Cost discounting and multi-year horizons are considered in the objective function but not in the results outputting yet.

First working commit for the new inputs and outputs system. Probably buggy... In Google Drive there is 8unit system excel that works with this (vInputOutput.xlsx).

Removing q_resDemandLargestInfeedTransferUp and q_resDemandLargestInfeedTransferDown, as q_resDemandLargestInfeedTransfer can handle both.

Added new parameter `ts_energy_(s)` to which total energy is
calculated. This parameter has the sample dimension last, as required
by the SCENRED2 tool. This allowed changing all other time series
to have indices `s, f, t` instead of previous `f, t, s` and dropping
the set `fts` completely.

Fixes #105

Only use scenarios with positive probability in building the long-term
stochastic tree. Previously this was limited to the number of scenarios,
but this allows excluding a scenario (setting its prob. to zero).

Adding the grid dimension to the reserve parameters and variables. Changes required to the input files. Removing the obsolete nuft set. Issue #69.

Updating constraints for maximum share of reserve provision, ROCOF limit, as well as reserve demand caused by largest unit infeed and largest transfer link import/export. Testing one constraint for reserve demand caused by largest transfer link import/export (instead of two separate constraints).

The parameters were not cleared at every loop.

See #99

Set `gn_forecasts(*, node, timeseries)` tells for which grid/flow/restype, node and timeseries combinations use forecasts and by default includes everything.

See: #99

First tests, disabling all reserve requirement constraints except q_resDemand. Adding some new parameters and sets (df_reservesGroup, restypeDirectionGroup, restypeDirectionGridNodeGroup) and changing the dimensions of some other parameters, sets and variables.

Updating the two ROCOF constraints so that they apply to a group of nodes instead of individual nodes.

The transfer ROCOF constraint considers failures of interconnectors with one end inside the group and one end outside the group. 'DefaultFrequency' and 'ROCOF' are now p_groupPolicy parameters instead of p_gn parameters.

Adding a new constraint q_maxDownward2 and modifying q_rampDownLimit. A small change to v_reserve.up to make it work with consumption units as well.

q_maxDownward2: similar to q_maxUpward2 but for v_gen and downward online+offline reserve provision

q_rampDownLimit: do not consider offline reserve provision

ran li authored Jul 10, 2019 and ran li committed Jul 10, 2019

Ciara's codes:minCons constraint allows to set the min load for PHS while still allowing foll reserve

#65: *v_startup* divided into *v_startup_LP* and *v_startup_MIP* variants to avoid undesired behavior when using integer online variables.

Replacing *IntervalStepCounter* with *tt_aggregate* due to the poor performance of *intervalStepCounter*.

*intervalStepCounter* now uses (counter, t) instead of (counter, counter_) due to the counter set being too limited in size.

Some time steps in the initial sample where also linked to the central sample.

Rewriting large portions of *3c_inputsLoop.gms* to make it more compact, and hopefully increasíng performance as well.

Also a minor speedup for setting model dimension (set `msft` etc.)

Changed behaviour of `mSetting` 't_perfectForesight' so that it’s defined from zero (not after 't_jump')

The setting does not have any effect if 't_perfectForesight' is less than 't_jump'.

New model setting `t_perfectForesight` gives number of time steps after `t_jump` where realization foreast is used